GB355503A - Improvements in and relating to the treatment of pigments - Google Patents

Improvements in and relating to the treatment of pigments

Info

Publication number
GB355503A
GB355503A GB24423/30A GB2442330A GB355503A GB 355503 A GB355503 A GB 355503A GB 24423/30 A GB24423/30 A GB 24423/30A GB 2442330 A GB2442330 A GB 2442330A GB 355503 A GB355503 A GB 355503A
Authority
GB
United Kingdom
Prior art keywords
value
pigments
treatment
lampblack
aqueous solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB24423/30A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CIE LORRAINE DE CHARBONS POUR
Original Assignee
CIE LORRAINE DE CHARBONS POUR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CIE LORRAINE DE CHARBONS POUR filed Critical CIE LORRAINE DE CHARBONS POUR
Publication of GB355503A publication Critical patent/GB355503A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/44—Carbon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

Flocculent pigments such as lampblack are deflocculated by treatment with a small amount of an aqueous solution of an amphoteric colloid, which has been treated with acid or alkali according to the nature of the pigment under treatment. In the case of carbon pigments the p<H> value of the colloid should be brought to a value of 8 or 9, while for pigments which are dispersed in acid solution a p<H> value of 4-6 is suitable. The treated pigment may be heated to evaporate the solvent, and may finally be subjected to a trituration process which increases its apparent density. According to an example, lampblack is mixed with 1 per cent of gelatine in aqueous solution, to which ammonia has been added to give a p<H> value of 8. The mixing is effected in a kneading machine and at the end of the treatment the temperature is allowed to rise to vaporize the water, after which the material may be further triturated in the same machine.
GB24423/30A 1929-09-07 1930-08-14 Improvements in and relating to the treatment of pigments Expired GB355503A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR355503X 1929-09-07

Publications (1)

Publication Number Publication Date
GB355503A true GB355503A (en) 1931-08-27

Family

ID=8893385

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24423/30A Expired GB355503A (en) 1929-09-07 1930-08-14 Improvements in and relating to the treatment of pigments

Country Status (1)

Country Link
GB (1) GB355503A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2794749A (en) * 1950-06-09 1957-06-04 Phillips Petroleum Co Furnace carbon black slurries and process for making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2794749A (en) * 1950-06-09 1957-06-04 Phillips Petroleum Co Furnace carbon black slurries and process for making same

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